Periodic Inventory by Three Methods The units of an item available for sale during the year were as follows: Jan. 1 Inventory 1,065 units @ $124 Feb. 17 Purchase 1,430 units @ $125 July 21 Purchase 1,540 units @ $126 Nov. 23 Purchase 1,140 units @ $127 There are 1,215 units of the item in the physical inventory at December 31. The periodic inventory system is used. a. Determine the inventory cost by the first-in, first-out method. $ 150,660 X b. Determine the inventory cost by the last-in, first-out method. $ 150,810 c. Determine the inventory cost by the weighted average cost method. Do not round intermediate calculation and round final answer to the nearest whole dollar. $ 152,522